Description: (1st United States Secretary of Defense (1947 - 1949))
James Forrestal transitioned from a successful career on Wall Street to government service, serving as Undersecretary of the Navy in 1940 before becoming Secretary of the Navy in 1944. He played a crucial role in strengthening the Navy during World War II. Appointed as the first Secretary of Defense in 1947, Forrestal was noted for his strong anti-Soviet stance and his advocacy for naval battle groups with aircraft carriers as their focal point. However, his tenure was marred by disagreements with President Truman, culminating in his resignation.